Abstract
A low-cost, broadband white-light source based on Au nanorod-aluminum oxide (Au-AAO) nanostructures was obtained and used for micro-spectroscopy measurement. When an Au-AAO sample was excited by using a continuous-wave or a pulsed laser, smooth and broadband strong photoluminescence from 550 nm to 1560 nm could be achieved. A high-quality transmission spectrum was obtained from few-layer MoS2 flakes using Au-AAO as the illuminating source, demonstrating the suitability of the Au-AAO nanostructure as a light source for spectroscopy. This accomplishment is significant and provides a potential new white-light source for applications in bio-sensing and spectroscopy on the microscale.
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